INA16 Athens - September 2017

Reticulofenestra haqii

Short diagnosis: Coccoliths small (3-5µm), intergrades with R. pseudoumbilicus.

Taxonomy:

Farinacci & Howe catalog pages: Reticulofenestra haqii * Reticulofenestra lingfengensis *

Short diagnosis: Coccoliths small (3-5µm), intergrades with R. pseudoumbilicus.

Geological Range:
Last occurrence (top): within NN15 zone (3.70-3.92Ma, top in Zanclean stage). Data source: Young 1998
First occurrence (base): within NN2 zone (19.00-22.82Ma, base in Aquitanian stage). Data source: Young 1998

Plot of occurrence data:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Interpret with caution & read these notes
• Taxon plotted: Reticulofenestra haqii, synonyms included - Dictyococcites haqii; Reticulofenestra haqii; Reticulofenestra pseudoumbilicus var. haqii; Parent: R. pseudoumbilicus group

Reticulofenestra haqii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-8-2017 Taxon Search: Advanced Search AphiaID: not found Go to Archive.is to create a permanent copy of this page - citation notes

Comments (1)

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Ines Galovic (CGS, Croatia)

It is clear on the holotype figures of both R. haqii and R minutula species (dimension around 4 µm and almoust the same number of elements) that R. haqii has smaller opening (around 1 µm) than minutula (around 2 µm) . Your figures of birefringence and last SEM here mostly are not presented by typical figures of haqii origin. Could you please give us (Paratethian workers who are not dealing with younger sediments) more information why you put this species in hagii?

10th April 2014 2:07pm

Jeremy Young (UCL, UK)

Reticulofenestra taxonomy is, of course, problematic and difficult to standardise. My approach in the Neogene is to use coccolith size and shape but not central area opening size. Hence for me all the illustrated forms fall in R. haqii.

13th April 2014 6:46pm

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